Stop using Telnet, start using Powershell and Test-Netconnect

So often in the past I had to spend time troubleshooting connectivity during product installs. At the end you always come down to testing the ports with Telnet.

So often I have gone to use Telnet to find it is not installed, and I am not able to install due to permissions. So I end up finding the right admin who can do it, which all takes time. Telnet is pretty basic too, but there is a better way, this was especially useful when I had a project to test ESXi connectivity to hundreds of ROBO sites during deployment, it meant we could script in Powershell a basic connectivity test.